1. E. Berkson,A characterization of scalar type operators on reflexive Banach spaces, Pacific J. Math. 13 (1963), 365–373.
2. E. Berkson,Semigroups of scalar type operators and a theorem of Stone, Illinois J. Math. 10 (1966), 345–352.
3. R. deLaubenfels,Unbounded scalar operators on Banach lattices, Honam Math. J. (to appear).
4. H. R. Dowson,Spectral theory of linear operators, Academic Press, 1978.
5. N. Dunford and J. T. Schwartz,Linear operators, III, spectral operators, Wiley-Interscience, New York, 1971.